CVE-2018-18311

Impact:
Important
Public Date:
2018-11-29
Bugzilla:
1646730: CVE-2018-18311 perl: Integer overflow leading to buffer overflow in Perl_my_setenv()

The MITRE CVE dictionary describes this issue as:

Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

Find out more about CVE-2018-18311 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This vulnerability is present in versions of perl included with Red Hat Virtualization Hypervisor and Management Appliance, however it is not exposed in any meaningful way. Perl is only included in these images as a dependency of components which do not manipulate ENV, and are not exposed to user input. A future update may address this issue.

CVSS v3 metrics

CVSS3 Base Score 8.1
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-perl524-perl) RHSA-2019:0010 2019-01-02
Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-perl526-perl) RHSA-2019:0001 2019-01-02
Red Hat Enterprise Linux 7 (perl) RHSA-2019:0109 2019-01-21
Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-perl524-perl) RHSA-2019:0010 2019-01-02

Affected Packages State

Platform Package State
Red Hat Virtualization 4 rhvm-appliance Fix deferred
Red Hat Virtualization 4 redhat-virtualization-host Fix deferred
Red Hat OpenShift Enterprise 3 perl Not affected
Red Hat Enterprise Linux 8 perl Not affected
Red Hat Enterprise Linux 8 perl:5.24/perl Affected
Red Hat Enterprise Linux 6 perl Will not fix
Red Hat Enterprise Linux 5 perl Will not fix

Acknowledgements

Red Hat would like to thank the Perl project for reporting this issue. Upstream acknowledges Jayakrishna Menon as the original reporter.
Last Modified

CVE description copyright © 2017, The MITRE Corporation